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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/la401008y
|2 doi
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|a pubmed25n0758.xml
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Mondal, Tathagata
|e verfasserin
|4 aut
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1 |
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|a Hydrogen-bonding-induced chain folding and vesicular assembly of an amphiphilic polyurethane
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 31.12.2013
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|a Date Revised 05.06.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a We have reported synthesis and vesicular assembly of a novel amphiphilic polyurethane with hydrophobic backbone and hydrophilic pendant carboxylic acid groups which were periodically grafted to the backbone via a tertiary amine group. In aqueous medium the polymer chain adopted a folded conformation which was stabilized by intrachain H-bonding among the urethane groups. Such a model was supported by concentration and solvent-dependent FT-IR, powder XRD, and urea-mediated "denaturation" experiments. Folded polymer chains further formed vesicular assembly which was probed by dynamic light scattering, TEM, AFM, SEM, and fluorescence microscopic studies, and dye encapsulation experiments. pH-dependent DLS and fluorescence microscopic studies revealed stable polymersome in entire tested pH window of 3.5-11.0. Zeta potential measurements showed a negatively charged surface in basic pH while a charge-neutral surface in neutral and acidic pH. MTT assay with CHO cell line indicated good cell viability
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Biocompatible Materials
|2 NLM
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|a Carboxylic Acids
|2 NLM
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|a Polyurethanes
|2 NLM
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|a Surface-Active Agents
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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1 |
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|a Dan, Krishna
|e verfasserin
|4 aut
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1 |
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|a Deb, Jolly
|e verfasserin
|4 aut
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1 |
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|a Jana, Siddhartha S
|e verfasserin
|4 aut
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|a Ghosh, Suhrit
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 29(2013), 22 vom: 04. Juni, Seite 6746-53
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
1 |
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|g volume:29
|g year:2013
|g number:22
|g day:04
|g month:06
|g pages:6746-53
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|u http://dx.doi.org/10.1021/la401008y
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